Cisco BPX 8650, Руководство по установке и настройке

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32-3
Cisco BPX 8600 Series Installation and Configuration
Release 9.3.30, Part Number 78-12907-01 Rev. E0, May 2005
Chapter 32 AT3-6ME (T3 to T2) Interface Adapter
Equipment Description
•
A single RS-232 male, subminiature 9-pin control terminal interface.
• AC input connector with integral fuse.
The control terminal is a standard RS-232 interface DTE interface. No hardware handshake is required
for the interface. The diagnostic display comes up immediately. It operates at 9.6 Kbps with any ASCII
terminal.
Front Panel Indicators
The front panel of the system provides LED indicators for the alarm status of the transmit and the receive
T3 and the T2 interfaces (see Table 32-2 and Figure 32-2). Also on the front panel are indications for
power and for operating status (Fail/Active).
The Overflow LED indicates that the cell rate coming from the T3 interface exceeds the bandwidth of
the T2 facility and that the Interface Adapter buffer has overflowed.
Table 32-1 Rear Panel Connectors
Connector Type Description
T3 RX BNC Receive T3 input from BPX or IGX ATM port.
T3 TX BNC Transmit T3 output to BPX or IGX ATM port.
T2 RX BNC Receive 6 MB input from T2 facility.
T2 TX BNC Transmit 6 MB input to T2 facility.
RS-232 DB9 Control terminal connection.
Primary Power IEC AC power input with fuse.
Table 32-2 Front Panel Indicators
Indicator Color Description
T3 Receive Status—AIS Green Alarm Indication signal detected on the RCV T3 line.
T3 Receive Status—RAI Yellow Remote Alarm Indication signal detected on the receive T3
line.
T3 Receive Status—LOS Red Loss of receive T3 signal.
T3 Receive—LOF Red Loss of frame on receive T3 signal.
T3 Transmit Status—AIS Green Alarm Indication signal detected on the transmit T3 line.
T3 Transmit Status—RAI Yellow Remote Alarm Indication signal detected on the transmit T3
line.
T3 Transmit Status—LOS Red Loss of transmit T3 signal.
T2 Receive Status—AIS Green Alarm Indication signal detected on the RCV T2 line.
T2 Receive Status—RAI Yellow Remote Alarm Indication signal detected on the receive T2
line.
T2 Receive Status—LOS Red Loss of receive T2 signal.
T2 Receive—LOF Red Loss of frame on receive T2 signal.
T2 Transmit Status—AIS Green Remote Alarm Indication signal detected on the transmit T2
line.